Jennifer Aniston's dog reportedly hates her new boyfriend John Mayer.

Norman, a Corgi-terrier cross, is said to have "taken a disliking" to the 'Gravity' singer, despite his best efforts to befriend the moody mutt.

A source said: "It's funny because John likes dogs but for some reason Norman has taken a disliking to him. Jennifer dotes on Norman. "She treats him like a child but she's got to the point where she's had to keep him out of the way if John is around." Jennifer has been reassuring John her beloved pet doesn't hate him, but just needs to learn to trust him.

The source added: "Jennifer is convinced it will get better the more she and John spend time together. Norman is just picky about people." John is also keen to get to know Norman more, and has recently been spotted taking him for walks around Los Angeles.